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    Re: Star CN with DSLR Camera
    From: Wolfgang Hasper
    Date: 2016 Jan 28, 17:34 +0100
    As re the digital CN options:
    Has anyone ever considered something like this
    creates all-around image that could be processed to recognize the sea horizon as well as a large number of celestial bodies.
    And the total number of pixels is large. Calibration shots at known locations from time to time.
    And without IR filters the sensors should work well for stars at night.
    Just a thought...
    Gesendet: Donnerstag, 28. Januar 2016 um 17:19 Uhr
    Von: "Greg Rudzinski" <NoReply_Rudzinski@fer3.com>
    An: wolfgang.hasper@web.de
    Betreff: [NavList] Re: Star CN with DSLR Camera


    If you would like to work through the example image then here are the givens:

    Time  00:41:47 UT   8/24/2015  

    Camera image time 16:41:47  8/23/2015 ZD +8 PST (not summer PDT) 

    A.P. Lat. 34° 10' N  Lon. 119° 14' W

    Pixel count 2401 (by Windows Paint)

    .56(2401 px)=1344.6'=22° 24.6'° (see calibration card attached, .56 is 35mm lens calibration multiplier) 

    Pixel corr. - 2.5' (see calibration card attached at 2401 px)

    Hs = 22° 22.1'

    Height of Eye 7ft.  -2.6'

    Refraction  -2.3'

    Ho = 22° 17.2'

    Hc = 22° 18.9'

    intercept 1.7' away

    azimuth 268.7°

    Greg Rudzinski

    Attached File:

    (f1-35mm-Super-Takumar-Cheat-Card.jpg: Open and save)

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